<?xml version="1.0" encoding="utf-8"?>
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta charset="utf-8"/>
<title>封面</title>
<link rel="stylesheet" type="text/css" href="../css/main.css"/></head><body>
	<div style="text-align:center">
		<img src="../img/cover.jpg" alt="cover"/>
	</div>
             
    </body></html>
